Agile Web Development with Rails 4 (Facets of Ruby) by Dave Thomas, David Heinemeier Hansson, Sam Ruby

By Dave Thomas, David Heinemeier Hansson, Sam Ruby

Rails simply retains on altering. either Rails three and four, in addition to Ruby 1.9 and 2.0, carry enormous quantities of advancements, together with new APIs and mammoth functionality improvements. The fourth variation of this award-winning vintage has been reorganized and refocused so it's extra invaluable than ever sooner than for builders new to Ruby and Rails.

Rails four introduces a few user-facing alterations, and the book has been up to date to compare the entire most modern alterations and new top practices in Rails. This contains complete aid for Ruby 2.0, controller issues, Russian Doll caching, robust parameters, Turbolinks, new try out and bin listing layouts, and lots more and plenty more.

Ruby on Rails is helping you produce high quality, beautiful-looking net functions quick. you consider growing the appliance, and Rails looks after the details.

Tens of hundreds of thousands of builders have used this award-winning ebook to benefit Rails. It's a vast, far-reaching instructional and reference that's prompt via the Rails center workforce. If you're new to Rails, you'll get step by step tips. If you're an skilled developer, this booklet provide you with the excellent, insider details you need.

Rails has advanced through the years, and this e-book has advanced in addition to it. We nonetheless commence with a step by step walkthrough of creating a true program, and in-depth chapters examine the integrated Rails positive aspects. This version now supplies new Ruby and Rails clients additional info at the Ruby language and takes extra time to give an explanation for key innovations all through. most sensible practices on tips to practice Rails proceed to alter, and this version retains up. Examples use issues, Russian Doll caching, and Turbolinks, and the publication focuses all through at the correct approach to use Rails. also, this variation now works on Ruby 2.0, a brand new unencumber of Ruby with vast practical and function improvements.

This version is for Rails4.0 and beyond.

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Extra info for Agile Web Development with Rails 4 (Facets of Ruby)

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Report erratum • discuss Data Types • 41 The method <<() is commonly used with arrays. It appends a value to its receiver. age end Ruby has a shortcut for creating an array of words. a = [ 'ant', 'bee', 'cat', 'dog', 'elk' ] # this is the same: a = %w{ ant bee cat dog elk } Ruby hashes are similar to arrays. A hash literal uses braces rather than square brackets. The literal must supply two objects for every entry: one for the key, the other for the value. For example, you may want to map musical instruments to their orchestral sections.

More typically you’ll want to include dynamic content created by the action method in the controller. In Rails, dynamic content is generated by templates, which come in three flavors. The most common templating scheme, called Embedded Ruby (ERB), report erratum • discuss Action Pack: The View and Controller • 35 embeds snippets of Ruby code within a view document, in many ways similar to the way it is done in other web frameworks, such as PHP or JSP. Although this approach is very flexible, some are concerned that it violates the spirit of MVC.

Chapter 1. Installing Rails • 14 What We Just Did • • • • We We We We installed (or upgraded) the Ruby language. installed (or upgraded) the Rails framework. installed (or upgraded) the SQLite3 and MySQL databases. selected an editor. Now that we have Rails installed, let’s use it. It’s time to move on to the next chapter where we create our first application. report erratum • discuss In this chapter, we’ll see • creating a new application, • starting the server, • accessing the server from a browser, • producing dynamic content, • adding hypertext links, and • passing data from the controller to the view.

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